He did attempt to kill a fascist so he literally is an anti-fascist.

We don't know his reasoning so until that becomes clear questions remain.

He might have been brother of a child rape victim, he might have loved Stormy Daniels until she was soiled by Trump, he might just be a old school Republican tired of the crazy in charge of his party. All seem reasonable things to hate Trump for but none are reason to kill him.

I'd rather Trump face jail time than die from an assassin. Him bitching to his cellie because he isn't allowed to have his phone and Truth Social access is a far better fate for him.